View source for RBG-27972, Requests Administrative Order Allowing Use of Addl Cooling Water Treatment Chemicals in Addition to Previously Described Chemicals in Applications for Water Discharge Permit WP0409.Proposed Treatment Program Discussed

{{Adams
| number = ML20154K892
| issue date = 05/25/1988
| title = Requests Administrative Order Allowing Use of Addl Cooling Water Treatment Chemicals in Addition to Previously Described Chemicals in Applications for Water Discharge Permit WP0409.Proposed Treatment Program Discussed
| author name = Deddens J
| author affiliation = GULF STATES UTILITIES CO.
| addressee name = Oneill M
| addressee affiliation = LOUISIANA, STATE OF
| docket = 05000458
| license number = 
| contact person = 
| document report number = RBG-27972, NUDOCS 8805310081
| document type = CORRESPONDENCE-LETTERS, EXTERNAL CORRESPONDENCE, EXTERNAL LETTERS ROUTED TO NRC
| page count = 3
| project = 
| stage = Other
}}

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{{#Wiki_filter:. +t Ih GULF STATES                    UTILITIES                    COMPANY e usa smies     a w cn.rses m      se m v su u .a. m s4 m n 43:A CODE 94   4H 6^94    34; te*31 May 25 , 1988 RBG- 27972 File No. Gl.11.2 Ms. Maureen O'Feill, Assistant Secretary Office of Water Resources Department of Environmental Quality Post Office Box 44091, Capitol Station Baton Rouge, LA 70804-4091

==Dear Ms. O'Neill:==

Water Discharge Permit No. WP0409 River Bend Station - Unit 1 Gulf States Utilities (GSU) hereby requests an Administrative Order to allow use of cooling water treatment chemicals in addition to those previously described in applications for Water Discharge Permit No. V"0409.
River Bend Station is a nuclear-fueled steam electric generating station located on the east bank of the Mississippi River south of St. Francisville in West Feliciana Parish, Louisiana.          Station cooling is provided by forced draft cooling towers and noncontact cooling water. Makeup to the cooling systems is drawn from and blowdown is discharged to the Mississippi River.
t Outfall 001 is the combined discharge of cooling tower blowdown and previously l
monitored low-volume wastes from Outfall 002. Current treatment of cooling water consists of adding:       tolytriazole salts for control of copper corrosien; polysilicate salts for control of mild steel corrosion; a                      polyacrylate /
I phosphate blend for control of scale formation; sulfuric acid for control of and sodium hypochlorite           for control of biofouling.            The treatment pH; chemicals currently used do not contain any of the Priority Pollutants listed in 40CFR423, Appendix A.
Continuous low-level chlorination of normal service water, which represents about ten percent of total cooling water flow, is required for control of Asiatic clams (Corbicula sp.).          Addition of bisulfite salts to the blowdown is used to remove low levels of residual chlorine when necessary.
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After about two years of operation at River Bend Station, testing and direct observation of cooling systems indicates a need for enhancement of treatment
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practices for mild steel corrosion inhibition. Three corrosion inhibitors,            or in suitable for mild steel, have been identified which can be used singly various combinations: polysilicate salts (currently in use); zine salts; and phosphate salts. Preliminary evaluation indicates that adequate protection of mild steel can be achieved uith zine levels of 1.0 mg/l or less.
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8805310081 880525                                                                                l   1 i
PDR    ADOCK 05000458 P                   DCD                                                                            \

  .< W Ms. O'Neill                           Page 2                          May 25, 1988 To enable adequate testing and ultimate use of the treatment options associated with the various combinations of corrosion inhibitors, GSU requests that the Administrative Order be issued for a term of 18 months. Twelve months of this term will be needed for testing and evaluation and 6 additional months will be needed to submit and receive approval of the                    permit modification request, if the effectiveness of the zine treatment is proven for continued use.
GSU proposes that the Administrative Order be issued with discharge limits for zine for Outfall 001 of Water Discharge Permit No. WP0409 of 1.0 mg/l daily average and 1.0 mg/l daily maximum, in accordance with the provisions of 40CFR423. Proposed monitoring would be conducted at Outfall 001 once per week by grab sample.
The proposed cooling water treatment program will consist of:
Polysilicate salts, zine salts, and/or phosphate salts, either singly or in combination for mild steel corrosion control; Tolytriazole salts or equivalent for copper corrosion control; Polyacrylate / phosphate blend or similar polyelectrolyte for scale control; Sodium hypochlorite for control of biofouling; and                                .
Sulfuric acid for pH control.
With the exception of the zine noted above, no chemicals which contain any of the Priority Pollutants listed in 40CFR42 3,           Appendix A, will be used for treatment of cooling water.
l Should you require further information, please contact Mr. James         W. Cook at the above address or at (504) 381-4151.
1 l                                          CERTIFICATION l
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to     assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who l
manage the system, or those persons directly responsible for gathering the information submitted, the information submitted is, to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant     penalties   for submitting false information, including the i       possibility of fine and imprisonment for knowing violations.
1 S neer ly, f
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                                                                    **p l
James C. Deddens Senior Vice President l                                                       River Bend Nuclear Group
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.., ;g cc: " Mr. Myron Knudson, Director Water Management Division (6W) .
U.S. Environmenta'l Protection Agency, Region VI Allied' Bank Tower at Fountain Place 1445 Ross Avenue Dallas, TX 75202-2733 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 NRC Resident Inspector Post Office Box 1051 St. Francisville, LA 70775-W
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